AOD Nitrogen Control Pratice of of Low Carbon 400 Series Ferritic Stainless Steel at Xingtai Iron and Steel

李广斌; 赵迎凯; 吴广海; 杨强强; 木永卫; 郭志彬

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AOD Nitrogen Control Pratice of of Low Carbon 400 Series Ferritic Stainless Steel at Xingtai Iron and Steel

更新时间：2026-01-21

- AOD Nitrogen Control Pratice of of Low Carbon 400 Series Ferritic Stainless Steel at Xingtai Iron and Steel
- Special Steel Vol. 41, Issue 1, Pages: 24-27(2020)
- 作者机构：
  
  1. 邢台钢铁有限责任公司不锈钢公司,邢台,054027
  2. 河北省线材工程技术研究中心,邢台,054027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：22 June 2019，
  
  Online First：19 April 2022，
  
  Published：19 April 2020
- 稿件说明：
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李广斌, 赵迎凯, 吴广海, et al. AOD Nitrogen Control Pratice of of Low Carbon 400 Series Ferritic Stainless Steel at Xingtai Iron and Steel[J]. Special Steel, 2020, 41(1): 24-27.
DOI：

李广斌, 赵迎凯, 吴广海, et al. AOD Nitrogen Control Pratice of of Low Carbon 400 Series Ferritic Stainless Steel at Xingtai Iron and Steel[J]. Special Steel, 2020, 41(1): 24-27. DOI：

摘要

在低碳400系不锈钢中

氮能恶化晶间腐蚀、低温冲击韧性、缺口敏感性和焊接等性能。因此

在低耗、高效前提下降低其氮含量成为AOD冶炼中的重要课题。结合生产试验

通过探讨回归分析法在其吹氩脱氮工艺控制中的应用

结合脱氮的热力学计算对AOD生产实践数据的分析

由拟合方程确定的AOD冶炼410S不锈钢和低碳430不锈钢时氮氩切换点为吹氮450m

时切换氩气

410S不锈钢正常冶炼时一般吹氩量控制在1550m

低碳430不锈钢AOD吹氩量一般控制在2050m

时可以将AOD终点氮含量控制在0.009 0%以下

并降低氩气消耗。

Abstract

Nitrogen can deteriorate intergranular corrosion

low temperature impact toughness

notch sensitivity and soldering properties of low carbon 400 series stainless steel. Therefore

reducing the nitrogen content under the premise of low consumption and high efficiency has become an important issue in AOD smelting. Combined the production test

by exploring the application of regression analysis in the control of argon-denitrification process and combined with the thermodynamic calculation of denitrification to analyze the production data of AOD

it is determined by the fitting equation that the switching point of nitrogen to argon is at blowing nitrogen 450 m

the normal blowing argon amount of 410S stainless steel in AOD is controlled at 1550m

and the blowing argon amount of low carbon 430 stainless steel in AOD is generally con¬trolled a

t 2050m

to get controlled [N

]

below 0.0090% and reduce of argon consumption.

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